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ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

  • ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel
  • ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel
  • ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel
  • ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel
ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel
Product Details:
Place of Origin: China
Brand Name: YUHONG
Certification: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Model Number: ASTM A350 CL.2
Payment & Shipping Terms:
Minimum Order Quantity: 500KGS
Price: NEGOTIABLE
Packaging Details: Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time: 10-90 Days
Payment Terms: L/C, T/T
Supply Ability: According To Client's Request
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Detailed Product Description
Standard: ASTM A350 LF2 Material: Alloy Steel
Material Grades: LF2 Size: Customizable
Type: Self Reinforeced Nozzle Drawing: Customizable
Highlight:

ASTM A350 LF2 cryogenic nozzle

,

self-reinforced pressure vessel nozzle

,

cryogenic system LF2 nozzle

ASTM A350 LF2 Forged Self Reinforce Nozzles For Pressure Vessel

 

 

 

ASTM A350 LF2 is a low-temperature carbon steel forging material that requires mandatory notch toughness testing. It is a specific grade within the ASTM A350 standard. Its excellent resistance to brittle fracture in low-temperature environments makes it widely used in the manufacture of pressure-bearing piping components such as flanges, valves, and fittings. It is particularly suitable for applications requiring low temperatures or high toughness, such as liquefied natural gas (LNG) and petrochemical cold zones.

 

 

The ASTM A350 LF2 Self-Reinforced Nozzle is a nozzle made of LF2-grade forged steel with -46°C impact toughness. Its inherently thickened wall meets the ASME specification for opening reinforcement, eliminating the need for external reinforcement rings. This design is particularly suitable for applications requiring high low-temperature toughness and structural simplicity. Design and manufacturing must strictly adhere to the ASME BPVC specification.

 

 

Chemical Composition

Element Composition, w.t % Grades
LF1 LF2 LF3 LF5 LF6 LF9 LF787
Carbon max 0.30 0.30 0.20 0.30 0.22 0.20 0.07
Manganese 0.60-1.35 0.60-1.35 0.90 max 0.60-1.35 1.15-1.50 0.40-1.06 0.40-0.70
Phosphorus max 0.035 0.035 0.035 0.035 0.025 0.035 0.025
Sulfur max 0.040 0.040 0.040 0.040 0.025 0.040 0.025
Silicon(a) 0.15-0.30 0.15-0.30 0.20-0.35 0.20-0.35 0.15-0.30 ... 0.40 max
Nickel 0.40 max(b) 0.40 max(b) 3.30-3.70 max 1.00-2.00 max 0.40 max(b) 1.60-2.24 0.70-1.00
Chromium 0.30 max(b)(c) 0.30 max(b)(c) 0.30 max(c) 0.30 max(c) 0.30 max(b)(c) 0.30 max(c) 0.60-0.90
Molybdenum 0.12 max(b)(c) 0.12 max(b)(c) 0.12 max(c) 0.12 max(c) 0.12 max(b)(c) 0.12 max(c) 0.15-0.25
Copper 0.40 max(b) 0.40 max(b) 0.40 max 0.40 max 0.40 max(b) 0.75-1.25 1.00-1.30
Niobium(e) 0.02 max(d) 0.02 max(d) 0.02 max 0.02 max 0.02 max 0.02 max -0.02 min
Vanadium 0.08 max 0.08 max 0.03 max 0.03 max 0.04-0.11 0.03 max 0.03 max
Nitrogen ... ... ... ... 0.01-0.030 ... ...

 

 

Mechanical Requirements

Grade
Class		 Tensile
Strength		 Yield
Strength
min		 Elongation
min		 Hardness
max
ksi MPa ksi MPa % HBW
LF1
CL1		 60-85 415-585 30 205 25 197
LF2
CL1		 70-95 485-655 36 250 22 197
LF2
CL2		 70-95 485-655 36 250 22 197
LF3
CL1		 70-95 485-655 37.5 260 22 197
LF3
CL2		 70-95 485-655 37.5 260 22 197
LF5
CL1		 60-85 415-585 30 205 25 197
LF5
CL2		 70-95 485-655 37.5 260 22 197
LF6
CL1		 66-91 455-630 52 360 22 197
LF6
CL2		 75-100 515-690 60 415 20 197
LF6
CL3		 75-100 515-690 60 415 20 197
LF9 63-88 435-605 46 315 25 197
LF787
CL2		 65-85 450-585 55 380 20 197
LF787
CL3		 75-95 515-655 65 450 20 197

 

Charpy V-Notch Impact Properties

Charpy V-Notch Energy Requirements for 10x10 mm Specimens
Grade
Class		 A B
ft·lbf J ft·lbf J
LF1
LF9		 13 18 10 14
LF2
CL1		 15 20 12 16
LF3
CL1		 15 20 12 16
LF5
CL1
CL2		 15 20 12 16
LF787
CL2
CL3		 15 20 12 16
LF6
CL1		 15 20 12 16
LF2
CL2		 20 27 15 20
LF3
CL2		 20 27 15 20
LF6
CL2
CL3		 20 27 15 20

 

 

 


Frequently used ASTM Grades

Material Pipes Fittings Flanges Valves Bolts & Nuts
Carbon Steel A106 Gr A A234 Gr WPA A105 A216 Gr WCB A193 Gr B7
A194 Gr 2H
A106 Gr B A234 Gr WPB A105 A216 Gr WCB
A106 Gr C A234 Gr WPC A105 A216 Gr WCB
 
Carbon Steel
Alloy
High-Temp		 A335 Gr P1 A234 Gr WP1 A182 Gr F1 A217 Gr WC1 A193 Gr B7
A194 Gr 2H
A335 Gr P11 A234 Gr WP11 A182 Gr F11 A217 Gr WC6
A335 Gr P12 A234 Gr WP12 A182 Gr F12 A217 Gr WC6
A335 Gr P22 A234 Gr WP22 A182 Gr F22 A217 Gr WC9
A335 Gr P5 A234 Gr WP5 A182 Gr F5 A217 Gr C5
A335 Gr P9 A234 Gr WP9 A182 Gr F9 A217 Gr C12
 
Carbon Steel
Alloy
Low-Temp		 A333 Gr 6 A420 Gr WPL6 A350 Gr LF2 A352 Gr LCB A320 Gr L7
A194 Gr 7
A333 Gr 3 A420 Gr WPL3 A350 Gr LF3 A352 Gr LC3
 
Austenitic
Stainless
Steel		 A312 Gr TP304 A403 Gr WP304 A182 Gr F304 A182 Gr F304 A193 Gr B8
A194 Gr 8
A312 Gr TP316 A403 Gr WP316 A182 Gr F316 A182 Gr F316
A312 Gr TP321 A403 Gr WP321 A182 Gr F321 A182 Gr F321
A312 Gr TP347 A403 Gr WP347 A182 Gr F347 A182 Gr F347

 

 

 

 

 

Application

 


Cryogenic Pressure Vessels and Systems

 

Liquefied Natural Gas (LNG) Facilities: Connections to Storage Tanks, Vaporizers, and Cryogenic Pumps.

 

Petrochemical Cryogenic Plants: Ethylene/Propylene Splitter, Cryogenic Storage Tanks, and Refrigeration Units.

 

Air Separation Units (ASUs): Liquid Oxygen/Liquid Nitrogen Storage Tanks and Pipeline Interfaces.

 

Harsh Environment Pressure Pipelines

 

Branch Connections for Oil and Gas Pipelines in Arctic and Cold Regions.

 

Valve and Instrument Interfaces for Refrigerant (e.g., Ammonia, CO₂) Circulation Systems.

 

High-Cleanliness and Corrosion-Sensitive Systems

 

Aseptic Connections for Pharmaceutical/Bioreactor and Food Processing Tanks.

 

Seawater Cooling Systems (LF2 requires an anti-corrosion coating).

 

 

 

 

ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel 0

 

Tag:

round steel tube,

carbon steel tubes,

ASTM A350 LF2 cryogenic nozzle

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